please answer all parts, will upvote upon completion

The overall average on a process you are attempting to monitor is 60.0 units. The process population standard deviation is 1.72. Sample size is given to be 4 . a) Determine the 3 -sigma x-chart control limits. Upper Control Limit (UCL-) = units (round your responso to two decimal places). Lower Control Limit (LCLx)= units (round your response to two decimal places). b) Now determine the 2-sigma x-chart control limits. Upper Control Limit (UCL-)= units (round your resporise to two decimal places). Lower Control Limit (LCL.) = units (round your response to two decimar places). How do the control limits change? A. The control limits are tighter for the 3-sigmo x-chart than for the 2 -sigma x-chart B. The control limits are tighter for the 2 -sigma x-chart than for the 3-sigma x-chart C. The control limits for the 2-sigme x-chart and for the 3-sigma x-chart are the same